package com.sunfeng.springcloud.controller;


import com.sunfeng.springcloud.entities.CommonResult;
import com.sunfeng.springcloud.entities.Payment;
import com.sunfeng.springcloud.lb.LoadBalancer;
import lombok.extern.slf4j.Slf4j;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.client.RestTemplate;

import javax.annotation.Resource;
import java.net.URI;
import java.util.List;

/**
 * @author sunfeng
 */
@Slf4j
@RestController
public class OrderController {
//java.net.UnknownHostException: CLOUD-PAYMENT-SERVICE 配置config
    public static final String PAYMENT_URL = "http://CLOUD-PAYMENT-SERVICE";

    @Resource
    private RestTemplate restTemplate;

    @Resource
    private LoadBalancer loadBalancer;

    @Resource
    private DiscoveryClient discoveryClient;

    /**
     * 需要添加@RequestBody
     * @param payment
     * @return
     */
    @PostMapping("/consumer/payment/create")
    public CommonResult<Payment> create(@RequestBody Payment payment) {

        return restTemplate.postForObject(PAYMENT_URL + "/payment/create", payment, CommonResult.class);
    }

    @GetMapping("/consumer/payment/get/{id}")
    public CommonResult<Payment> getPayment(@PathVariable("id") Long id) {
        return restTemplate.getForObject(PAYMENT_URL + "/payment/get/" + id, CommonResult.class);
    }

    @GetMapping("/consumer/payment/getForEntity/{id}")
    public CommonResult getPayment2(@PathVariable("id") Long id) {
        ResponseEntity<CommonResult> entity = restTemplate.getForEntity(PAYMENT_URL + "/payment/get/" + id, CommonResult.class);
        if (entity.getStatusCode().is2xxSuccessful()) {
            return entity.getBody();
        } else {
            return new CommonResult(444, "操作失败");
        }

    }

    @GetMapping(value = "/consumer/payment/lb")
    public String getPaymentLB() {
        // 获取提供服务的列表
        List<ServiceInstance> instances = discoveryClient.getInstances("CLOUD-PAYMENT-SERVICE");

        if (instances == null || instances.size() <= 0) {
            return null;
        }
        ServiceInstance serviceInstance = loadBalancer.instances(instances);
        URI uri = serviceInstance.getUri();
        return restTemplate.getForObject(uri + "/payment/lb", String.class);

    }
    //zipkin+sleuth
    @GetMapping("/consumer/payment/zipkin")
    public String paymentZipkin() {
        String result = restTemplate.getForObject(PAYMENT_URL+"/payment/zipkin/",String.class);
        return result;
    }

}
